Law of Conservation of Mass

Front

Matter can not be created nor destroyed: it can only be

Back

Transformed, changed

Front

The number to the lower side of an element is a

Back

Subscript

Front

The number in front of a compound or element is a

Back

Coefficient

Front

When is a chemical reaction balanced? Options: both sides have the same elements, Both sides have the same  number of atoms, Same subscripts, Same coefficients

Back

Both sides have the same  number of atoms

Front

In a synthesis reaction

Back

Two or more compounds make one single product

Front

Which of these is not a chemical reaction? Options: Burning of wood, Milk going bad, Mixing vinegar and baking soda, Melting of ice

Back

Melting of ice

Front

The coefficient in  3H₂O is

Back

3

Front

What is a precipitate?

Back

A solid that forms when two liquids are mixed.

Front

If reaction starts with 20g of reactants, what is the total mass of products produced?

Back

a total of 20g of products

Front

In a reaction A + B ----> C, reactant A has 5g and product C has 9g. How many grams does reactant B should have? Options: 4g, 5g, 9g, 14g

Back

4g